code: def load_tzioumis_data(tzioumis_data_path: str) -> pd.DataFrame:
      """
      Load Tzioumis data from
      https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi%3A10.7910%2FDVN%2FTYJKEZ
      (Paper: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5839157/)
      """
      print(f"Loading Tzioumis data from {tzioumis_data_path}")
      percent_df = (
          pd.read_excel(tzioumis_data_path, sheet_name="Data")[
              lambda df: df["firstname"] != "ALL OTHER FIRST NAMES"
          ]
          .assign(
              firstname=lambda df: df["firstname"].apply(
                  lambda s: s[0] + s[1:].lower()
              )
          )
          .set_index("firstname")
      )
      return percent_df
  
file_path: ParlAI/projects/dialogue_bias/util.py
imports: import os
  from collections import defaultdict
  from typing import Dict, List, Tuple
  import pandas
label_desc: Use image node_id 5 for calling a global function with example usage: load_tzioumis_data(tzioumis_data_path) and returns: percent_df